MPS-255中速磨煤机喷嘴环改造

对影响元宝山发电有限公司3号锅炉MPS-255中速磨煤机出力的各项因素进行分析,认为磨辊磨损、磨盘磨损、喷嘴环磨损及喷嘴环不合理是磨煤机出力降低的主要原因。对此,更换了磨辊和磨盘,并将固定式喷嘴环改造为旋转式喷嘴环,改造后磨煤机出力提高,保证了锅炉燃煤需要。

RETROFIT OF NOZZLE RING FOR MPS-255 MEDIUM SPEED COAL MILL

Various factors affecting the output capacity of MPS-255 medium speed coal mill for boiler no.3 in Yuanbaoshan Power Generation Co Ltd have been analysed. It is believed that the main causes resulting in reduction of the output capacity for said coal mill are as follows: worn-out of the grind rollers, grind tray, nozzle ring, and unreasonable structure of said ring. For these, the grind rollers and grind tray have been replaced, and the fixed nozzle ring being retrofitted into a rotary one. After retrofitting, the output capacity of the said coal mill has been enhanced, ensuring the need of fuel coal for boilers.